Sort of seat: dog needs it back (3-2)
I believe the answer is:
tip-up
'sort of seat dog needs it back' is the definition.
I can't judge whether this defines the answer.
'dog needs it back' is the wordplay.
'dog' becomes 'pup' (I have seen 'Young dog ' mean 'pup' so perhaps 'dog' could also mean 'pup').
'needs' says to put letters next to each other.
'back' says the letters should be written backwards.
'pup'+'it'='pupit'
'pupit' in reverse letter order is 'TIP-UP'.
Can you help me to learn more?
(Other definitions for tip-up that I've seen before include "(Of seat) constructed so as to be lifted" , "Overbalance" .)